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biology 0610printed 18 · PDF 18
328 pagesrevision 46933
printed 18 · PDF 18
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4
Use the key to identify which group is amphibians.
hair present ....................cecceeeeeeeee mammals
hair absent ................... ccc cceeeee eee go to2
feathers present ......................000005 group A
feathers absent ....................0.:020e go to 3
dry scaly SKiN.................. 2. cece eeeee eee group B
Moist SKIN ...... 2.2... eee eee eee e eee eee eee go to 4
four lIMDS ............ 2... c cece eee e eee eee es group C
NO LIMDS ..... 2. eee eee cece ee eentee ee eeee es group D
The diagram shows four arthropods.
Pediculus x20
Dermacentor x7 Carcinus x0.5
How many of these arthropods are insects?
A 1 B 2 Cc 3 D4